|
1
|
Wang CC, Lin GM, Lin CH, Chang TW, Ke SY, Liu CY, Lee GH, Chen BH, Chuang YC. Synthesis, Structural Characterization, and Water Vapor Sorption Behavior of Two Ligand Ratio-Dependent Supramolecular Networks, [Cd(2,2'-bpym) 1.5(BDC)]·0.5(2,2'-bpym)·5H 2O and [Cd(2,2'-bpym) 0.5(BDC)(H 2O) 3]. ACS OMEGA 2022; 7:14089-14101. [PMID: 35559195 PMCID: PMC9089378 DOI: 10.1021/acsomega.2c00652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 04/06/2022] [Indexed: 06/15/2023]
Abstract
Two ligand ratio-dependent supramolecular networks, [Cd(2,2'-bpym)1.5(BDC)]·0.5(2,2'-bpym)·5H2O (1) and [Cd(2,2'-bpym)0.5(BDC)(H2O)3] (2), (BDC2- = dianion of terephthalic acid and 2,2'-bpym = 2,2'-bipyrimidine) have been synthesized and structurally characterized by the single-crystal X-ray diffraction method. Structural determination reveals that compound 1 is a two-dimensional (2D) layered metal-organic framework (MOF) constructed via the bridges of Cd(II) ions with 2,2'-bpym and BDC2- ligands, and compound 2 is a zero-dimensional (0D) 2,2'-bpym-bridged di-Cd(II) monomeric complex. When the thermally dehydrated powders of 1 (at 100 °C) were immersed into water solution, most of the dehydrated powders of 1 underwent structural transformation back to rehydrated 1, but very little amounts of the dehydrated powders of 1 were decomposed to light-brown crystals of 2 or colorless crystals of a new coordination polymer (CP), [Cd(2,2'-bpym)(BDC)(H2O)]·3H2O (3), with its one-dimensional (1D) zigzag chain-like framework being constructed via the bridges of Cd(II) ions with the BDC2- ligand. Structural analysis reveals that all 3D supramolecular networks of 1-3 are further constructed via strong intermolecular interactions, including hydrogen bonds and π-π stacking interactions. Compounds 1 and 2 both exhibit significant water vapor hysteresis isotherms, and their cyclic water de-/adsorption behavior accompanied with solid-state structural transformation has been verified by de-/rehydration TG analyses and powder X-ray diffraction (PXRD) measurements.
Collapse
Affiliation(s)
- Chih-Chieh Wang
- Department
of Chemistry, Soochow University, Taipei 11102, Taiwan
| | - Geng-Min Lin
- Department
of Chemistry and Center for Emerging Material and Advanced Devices, National, Taiwan University, Taipei 10617, Taiwan
| | - Cheng-Han Lin
- Department
of Chemistry, Soochow University, Taipei 11102, Taiwan
| | - Tsai-Wen Chang
- Department
of Chemistry, Soochow University, Taipei 11102, Taiwan
| | - Szu-Yu Ke
- Department
of Chemistry, Soochow University, Taipei 11102, Taiwan
| | - Chuan-Yien Liu
- Department
of Chemistry, Soochow University, Taipei 11102, Taiwan
| | - Gene-Hsiang Lee
- Instrumentation
Center, National Taiwan University, Taipei 10617, Taiwan
| | - Bo-Hao Chen
- National
Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Yu-Chun Chuang
- National
Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| |
Collapse
|